Grille



March 26, 1929 e. w. ACKE-ZRMAN GRILLE Filed July 30, 1926 INVENTOR620g: [Avian/lam ATTORNEYS IIIl /IIIIII/ Patented Mar. 26, 1929. iUlallfi s'rnrssrarnur orrice.

GEGRGE W. AGKERMAN, OF NEW YORK, N. Y., ASSIGNDR TO ACE, .MAN 330013.I1TITEll't VIEWER CQRR, OF YORK, N. '55., A CQRPOHATIQN OF NEW cerium.

Application filed July 3D, 1926. Serial No. 1538,0535.

An obiect Oil: the present invention is to I haveuscd the referencenumeral 10 to provide a. grille capable of {INV'IClO r: ige oi"designate an. apartment door, the inside oi utility, but which finds itspreferred em- 'which is shown in Fig. 1. The grille is bodinient 111 adevice for use on ZtPttiblBQ-lll} mounted at any desiredheight in thedoor, fl r preferably in apiiroxinzately the loi'atiim 'ilso An obiectof the invention is'to provide his ted. It includes a pair of inner. anda device of this character which will permit out-er i rame members 11and 1.2 respectively the occupant of an apartment to observe apwhichregister with each other and which plicants for entrance without oponmgthe are secured together in any suitable mandoor, to pay bills, or carryon conversation ner. i r

through the grille without any danger olfan While 1. have shown annularframe memintruder gaining entrance or insertinghis here, it is to heunderstood that the frame hand through the grille to open the doormembers might be rectangular, diamond from the inside. shape, or oi anyother COIll OXfIlHLilOII de- 15 In its preferred embodiment the grilleinsired without departing from the invention. cludes a pair oi": framemembers of similar Preferably an opening, is cut in the door in size andshape, the outer 'l'ranie n'ieinber caraccordance with the shape of theframe rying a grating or a plurality of bars for members, and outwardlypresented flanges restricting the size of-the opening, and the 13, i lon the frame members overlie the 20 inner frame member carrying aclosurefor edge of the opening. Screws 15 pass closing the opening. through theflange 13 of the member 11, Prcierablv the two frame members, one andentering threaded pockets 16 in. the at the outside and one at theinside of the flange 14: oil the member 12 allord one condoor are heldtogether by securing devices venient type of securing device. It to be25 which are imiccessible from the outside oi the noted that the outerends of these screws (1001,80 that there is no d anger of an intruderare concealed, so that an intruder cannot deprying oil, or forcibly(llSlOt aging the grille tach the outer frame member by loosening fromits position in the door. the screw.

Other objects of the invention are to pro- Frame member 12 is preferablybarred. as so vide a grille of simple, practical. coiritruo iniflicatedat 17, the bars or grating being, tion which will be neat and attractivein apif desired, integrally cast with the member pearance, rugged,durable and elliciont in 12. These bars e'l'lcctively prevent an inuse,and well suited to the requirements ol': trader from inserting his handthrough the 00011011110211ll'lttnlliltlcbllle. grille opening to openthe door from the With the above noted and other objects in inside. 7view, the invention confsts in. certain novel 'l hegrille is norn'iallyclosed by a swingieatures o'lf construct-ion and combinations inp;closure member 18 oi the same so ape as and arrangements of parts, aswill be more the frame mcn'ibeis 11, 12. Ears 19 integral lullyhereinafter set forth and pointed out with the closure member receives aslidin the claim. The invention may be more ingbolt 23 nm'inally urgedoutwardly by a fully understood from the following; despring 24:pocketed in the inner end of the scription in coniiection with theaccompanysleeve. lllovenient of the bolt is eliminated inn drawings,wherein by the travel oi the shank 25 of a handle 26 1 is a view ininside elevation of an a slot 27 in the sleeve. A keeper 28 rigidapartment door showing; my improved grille with the frame member llcoacts with the in applied position. end oil the bolt 23. This bolt endis pretll ig. 2 is an ei'ilarged elovational view of erably providedwith a caminingr face 29, the inside of the grille showing the closureso that the bolt latches automatically as the plate closed and latched.closure is swung to. o Fig.5. 3 is a similar view looking at the out-The central portion oil the closure plate 5 side (it the grille, ltlisoffset to lit within the ring 13, and the Fig. l is a transversesectional view on the edges of the plate lie snugly and flatly line 4- lof Fig. 2. against the inner face of this ring, whereby Fig. 5 is asectional detail on the line 5--5 a substantially draft-proof and jimmy-55 of Fig. 2. proof closure is provided without the necessity'ofexpensive grooving operations on the door tself.

Various changes and alterations might be made in the general form andarrangement iof parts described WltllOllt: departing from theinvention.Hence I do'not Wish to limit myself'to the details set forth, butshall'consider myself atliberty to makesuch changes and alterations as"fairly fall within the spiritand scope of the appended claim.

Iclaim e v A. door grillefor, fireproof doors, the

' grille being of the character which provides a speaking opening and asight opening, but

which prevents the insertion of a hand from the outs de of the door,said grille including 1 an outercross-barred frame .member and an innerclosure. carrying frame member, said edge to the inner face of the innerframe .tion of a jimm ing tool under frame members each includingportions to be received 111 a prepared opening in the door and portionsto overlie the inner and outerfaces of the door, securing devicesconnecting said frame members together and to the door, the closurecomprising a substantially solid metal plate hinged at one inner framemember, coacting latching means carried by the free edge of the closureplate and the inner frame member respectively, the closure plateincluding an offset center portion entering the inner frame member whenthe closure is shut, the closure radially beyond said ofiset portionproviding a flange lying snugly against the member to provide asubstantially draftproof construction and the offset center portionserving as a guard means to prevent the inscrsaid flange from the outsie of the door.

GEORGE WV. ACKERMAN.

CERTIFICATE OF CORRECTION.

Patent No. 1,706,835. Granted March 26, 1929, to

GEORGE W. AGKERMAN.

It is hereby certified that error appears in the printed specificationof the above nnmbered patent requiring correction as follows: Page 1,line 94, after the word "member" insert:

"18 are spaced apart and extend laterally beyond said member, beingsnugly received between spaced parallel cars 20 integral with the ring13, A hinge pin 21 is passed through the tour alined ears, therebyhingedly connecting the closure plate to the inner ring 13. Thereiatively wide flat hear ing surfaces defined by the spaced pairs ofinterfitting ears 19, 20 obviate any danger of the closure plate saggingon its hinges and not swinging true to snugly closed position. Theexposed and readily accessible portion of the hinge pin 21 between theears 19 offers a convenient place of attachment for a. coiled tensionalspring (not shown) if automatic closing is desired";

and that the said Letters Patent should be read with these correctionstherein that the same may conform to the record of the case in thePatent Offiee.

Signed and sealed this 23rd day of April, A. D. 1929.

M. J. Moore, (Seal) Acting Commissioner of Patents.

